川中磨溪-高石梯地区栖霞组层序地层学解释

Sequence stratigraphic interpretation of Qixia Formation in Moxi Gaoshiti area,central Sichuan

栖霞组白云岩储层是川中磨溪-高石梯地区的重要产气层,但是目前对于其白云岩储层的相带分布和形成机制尚不明确。为此,根据最新采集到的钻井、测井、岩心和地震资料,以Vail经典层序地层学理论为指导,在全区建立层序地层格架;通过印模法恢复沉积前古地貌,随后通过波形聚类方法,获得两大体系域各自的地震相,结合沉积认识最终编制沉积相图。

the dolomite reservoir of Qixia Formation is an important gas producing reservoir in Moxi Gaoshiti area in Central Sichuan,but the facies distribution and formation mechanism of its dolomite reservoir are not clear at present. Therefore,according to the newly collected drilling,logging,core and seismic data,and under the guidance of Vail’s classical sequence stratigraphy theory,the sequence stratigraphic framework is established in the whole region;The pre sedimentary paleogeomorphology is restored by the impression method,and then the seismic facies of the two system tracts are obtained by the waveform clustering method. Combined with the sedimentary understanding,the sedimentary facies map is finally prepared.